2D电液压力伺服阀的实验研究  

Experimental Study of 2D Electro-hydraulic Pressure Servo Valve

作　　者：李梦龙 阮健[1] 刘奎[1] 朱兆良 郭克[1] LI Meng-long;RUAN Jian;LIU Kui;ZHU Zhao-liang;GUO Ke(Key Laboratory of Special Purpose Equipment and Advanced Processing Technology of Ministry of Education, Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]浙江工业大学特种装备与先进加工技术教育部重点实验室,浙江杭州310014

出　　处：《液压气动与密封》2018年第3期33-36,共4页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金资助项目(51375445);浙江省自然科学基金资助项目(LZ13E050002)

摘　　要：为了满足飞行器的舵机控制和刹车控制等领域的需要,特推出2D电液压力伺服阀。目前,压力伺服阀种类很少,而且多采用压力传感器作为输出进行闭环,这类伺服阀受环境温度变化影响,温漂较大。2D电液压力伺服阀采用两级结构。以LVDT传感器检测先导级阀芯位移作为反馈量,对先导级阀芯进行闭环控制,可以有效避免压力传感器温漂大的问题。实验结果表明,滞环大小为2.82%,线性度大小为3.4%,经试验研究,2D电液压力伺服阀的频宽可以达到70Hz。In order to meet the needs of the aircraft steering gear control and brake control,the 2D electro-hydraulic pressure servo valve is introduced.At present,there are few types of pressure servo valves,and the pressure sensors are used as the output for the closed-loop,which is affected by the temperature change of the environment.2D electric hydraulic pressure servo valve adopts two levels of structure.Using the LVDT sensor to detect the displacement of the pilot valve core as the feedback,the closed-loop control of the pilot valve core can effectively avoid the problem of temperature drift of the pressure sensor.The experimental results show that the dilatation size is 2.82%,the linearity is 3.4%,and the frequency width of the 2D electro-hydraulic pressure servo valve can reach 70Hz.

关 键 词：2D电液压力伺服阀 LVDT 温漂 研究 

分 类 号：TH137[机械工程—机械制造及自动化]